There are 5 different trick types that you will need to ace.
Jump (Blue areas)
Donut (Green poles)
Smash (Blocks dotted around the track, vary in colour)
Drift (Between the orange cones)
Spin (Spin on the spot inside the purple/pink coned area)
To ace each of these 5 areas you need to achieve 3 full triangles when performing them, Jump requires a high jump so you will need a good run up, Donut requires a long maintained spin around the pole, smash can be achieved by breaking a set of 3 blocks, drift will require passing through the cones at a fast speed along with a decent angle of drift and spin requires you to maintain the spin on the spot inside the area.
This can be achieved once you have completed all 5 tutorials in the Gymkhana Academy during the Gymkhana Academy Final (These will explain each area in more depth anyway)
Will unlock once the race has finished
Here's a video to show you each of the 5 areas.